Other Fuel System Pump problems of the 2014 Audi Q5

"fuel pump" while driving home after a road trip on the highway (in the left fast lane) my car suddenly lost power and would not accelerate when pressing on the accelerator. The "ecp" warning light came on and I had to ease the car to a stop on the left shoulder. After about 5+ minutes, I was able to start the car again and move it over to the right-hand lane when the car stuttered and shut off again. This time I was on the right shoulder. After another few minutes, I was able to start the car again and called ahead to take it in the nearest Audi dealership (in the town I was returning home from). The car had seemed a little hesitant to start. The next day (just before closing), that Audi dealership's diagnostic tests determined the error code to be '2043758/8 punch 2 & 3' which required replacement of the fuel pump. Four parts needed: fuel pump, cap, washer and 'repair set'. Since this dealership couldn't explain what the 'repair set' was needed for - the most expensive part - I called other Audi dealerships and searched the internet for information. No other source mentioned a 'repair set'. Also, all but one other parts department said that the fuel pump part was backordered by 1-2 weeks due to many recent issues with the this part. Since it seemed that I was being taken advantage of by that first dealership, I purchased the 3 parts (pump, cap & washer) at the only Audi dealership that seemed to have the pump (about an hour away from my home town) and made a service appointment at another dealership near the town I was visiting. A convoluted process to get my Q5 fixed but due to the number of reported issues with the fuel pump according to the Audi mechanic, there is a problem with the Audi fuel pump in addition to fuel pump flange recall.

Drove on hawthorne boulevard close to torrance boulevard less than a mile away from Audi dealership when the car start to shake and almost got rear ended. I was able to pull aside and after few seconds the engine was working fine but a message on the board mentioning the auto stop start function was not working properly and the associated symbol turned on on the dash. I took the car to Audi dealership and they confirm that the fuel pump needs to be replaced.